If the sticks are hard to insert, make a shallow cut in the top of the apple first with a sharp knife. Make sure that the apples are secure on the sticks.
When placing the apples onto the baking sheet, remember to leave a little space between each apple so that they don’t stick together.
If you find the sticks difficult to insert, make a shallow slit in the top of the apple with a sharp knife first. Make sure that the apples are secure on the sticks, or they’ll fall into the candy mixture.
The baking sheet needs to be large enough to hold all of the apples without them touching. If you need to, use two baking sheets.
Avoid over-stirring the mixture. You don’t want any air bubbles. Stir just enough to mix in the flavoring, but not so much that you get air bubbles. You are mixing the extract in now, because otherwise the high heat will kill the flavor. If you aren’t a fan of vanilla, you can omit it, or use another flavor, such as cinnamon.
For a smoother finish, let the candy cool on the apple for 30 seconds, then dip again. [11] X Research source